Re-Birth Of A Genius. Creator/Destroyer - Chapter 1789: Kumar's Net

Second Awakening? A System? Having lost the battle of the Dark Catastrophe to the demons—spawns of the Dark Gods— humanity is given a chance at making things right once again. Born as a twin into a family of high ranking talent awakeners, Damien Terrace is met with trouble when it is his turn to perform the ritual. After awakening the E-Rank Summoner talent, Damien loses everything to his twin. Exiled by his father to perish away from them, Damien goes through a second awakening that changes the play field for him. Ding! [The God of Summons is furious and has blessed you with a system!] [You have fused with the Mythics Summoning System—A system that only allows you to summon mythical beasts!] [Obtain nineteen Magic Essence Cores to boost your core to the next level!] [Slay 200 more demons to unlock another summon!] Damien’s only option is to evolve!

[You have awakened the ‘Heroine Netori’ ability.][Try to eat the heroines.]

The world dare to ask, what is God of War?

“It is with the flesh dominates the world, fists burst into the starry sky, palms crack the sky, destroy all the way, push the eight wastes and Liuhe horizontally!”

“It is with a brave heart, passing by the bustling, swallowing loneliness, fearless and invincible, eternal immobility alone!”

For both, for… God of War!

This is a young man with a mysterious life experience. In order to obsessively in his heart, he crossed the heavens and the world, traveled all over the world, with a pair of bare-handed stories that tear thousands of legends… The rise of the God of War, all the way!

- Description from MTL

Three Days of Happiness is a novel by Sugaru Miaki, also known as Fafoo. It’s a rewritten version of the story originally posted to 2ch.

The premise of the story revolves around a shop where one can sell away the remaining years of their life, and the consequences of doing so.

“I Say A Little Prayer” is a short related story which was posted along with the novel’s release. It spoils some things about the main story, but nothing major.